ExxonMobil IS NOT the worlds largest company, its not even the largest oil company. It IS NOT the largest employer of people in the US. Exxon has the largest GROSS profit, BUT NOT near the highest profit margin. In fact their profit margin is about average at best.
My link does say it is the largest company by market value. You are right. I should have at least included that qualifier. Considering how business stories are handled outside the WSJ, the qualified statement is also probably suspect.